40142840832 has 66 divisors (see below), whose sum is σ = 115911608358. Its totient is φ = 13380943872.

The previous prime is 40142840821. The next prime is 40142840833. The reversal of 40142840832 is 23804824104.

It can be written as a sum of positive squares in only one way, i.e., 38390916096 + 1751924736 = 195936^2 + 41856^2 .

It is a super-2 number, since 2×40142840832² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40142840833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2168673 + ... + 2187104.

Almost surely, 2^40142840832 is an apocalyptic number.

It is an amenable number.

40142840832 is an abundant number, since it is smaller than the sum of its proper divisors (75768767526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40142840832 is a wasteful number, since it uses less digits than its factorization.

40142840832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355803 (or 4355782 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The spelling of 40142840832 in words is "forty billion, one hundred forty-two million, eight hundred forty thousand, eight hundred thirty-two".